A duplicate device was detected. This error occurs when a bus driver incorrectly creates two identically named sub-processes (known as a bus driver error), or when a device with a serial number is discovered in a new location before it is removed from the old location.
After running mir_demo_server on VT 1, when I switch to VT 7 then back to VT 1, the demo server really flickers black quite a lot (entire screen, pointer included). I'm not sure, but I also upgraded my kernel to 3.18.2-031802-generic at the same time, if it's because of that, please mark invalid.---ApportVersion: 2.15.1-0ubuntu2Architecture: amd64AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: william 5932 F.... pulseaudioCurrentDesktop: UnityDistroRelease: Ubuntu 15.04HibernationDevice: RESUME=UUID=f950febe-baf1-425c-8ab5-f4f43a86839bLsusb: Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0a5c:217f Broadcom Corp. BCM2045B (BDC-2.1) Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hubMachineType: LENOVO 3249CTOPackage: mirProcFB: 0 inteldrmfbProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.18.0-9-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash thinkpad_acpi.fan_control=Y vt.handoff=7ProcVersionSignature: Ubuntu 3.18.0-9.10-generic 3.18.2RelatedPackageVersions: linux-restricted-modules-3.18.0-9-generic N/A linux-backports-modules-3.18.0-9-generic N/A linux-firmware 1.140SystemImageInfo: current build number: 0 device name: channel: daily last update: UnknownTags: vividUname: Linux 3.18.0-9-generic x86_64UpgradeStatus: No upgrade log present (probably fresh install)UserGroups: adm autopilot cdrom dip disk fuse kvm libvirtd lpadmin plugdev sambashare sbuild sudo video_MarkForUpload: Truedmi.bios.date: 01/26/2010dmi.bios.vendor: LENOVOdmi.bios.version: 6QET35WW (1.05 )dmi.board.name: 3249CTOdmi.board.vendor: LENOVOdmi.board.version: Not Availabledmi.chassis.asset.tag: No Asset Informationdmi.chassis.type: 10dmi.chassis.vendor: LENOVOdmi.chassis.version: Not Availabledmi.modalias: dmi:bvnLENOVO:bvr6QET35WW(1.05):bd01/26/2010:svnLENOVO:pn3249CTO:pvrThinkPadX201:rvnLENOVO:rn3249CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:dmi.product.name: 3249CTOdmi.product.version: ThinkPad X201dmi.sys.vendor: LENOVO
Extended Berkeley Packet Filter (eBPF) is an in-kernel virtual machine that allows code execution in the kernel space. eBPF is utilized by a number of components in RHEL. In RHEL 8.1, the BPF Compiler Collection (BCC) tools package is fully supported on the AMD and Intel 64-bit architectures, and available as a Technology Preview for other architectures. In addition, the bpftrace tracing language and the eXpress Data Path (XDP) feature are available as a Technology Preview.
The virtual machine includes a new system call bpf(), which supports creating various types of maps, and also allows to load programs in a special assembly-like code. The code is then loaded to the kernel and translated to the native machine code with just-in-time compilation. Note that the bpf() syscall can be successfully used only by a user with the CAP_SYS_ADMIN capability, such as the root user. See the bpf(2) man page for more information. 153554b96e